using apc in a upc optic?
On Wed, Oct 27, 2021 at 11:09 AM Nate Burke <[email protected]> wrote:
> It's the 2nd cable, I've already replaced it once.
> On 10/27/2021 1:06 PM, Bill Prince wrote:
>
> You know, it just might be the angle of the polish on the ends of the SFP
> and cable that line up just enough to attenuate the signal. IDK, but if I
> had a cable like that, I think I would pull out my kitchen shears and chop
> it into little pieces.
> --
> bp
> part15sbs{at}gmail{dot}com
>
>
> On Wed, Oct 27, 2021 at 10:43 AM Nate Burke <[email protected]> wrote:
>
>> I think it must be the fiber demons, same cable run just failed again.
>> Replaced SFP's with no change, changed 1M patch cable again and that fixed
>> it. One side was showing 40db loss on the RX according to the SFP Stats.
>> Was working fine until suddenly it wasn't.
>> On 9/30/2021 4:37 PM, Chuck McCown via AF wrote:
>>
>> First real computer class. We had to buy a floppy. I bought one,
>> thought I would never fill it.
>>
>> *From:* Bill Prince
>> *Sent:* Thursday, September 30, 2021 3:11 PM
>> *To:* [email protected]
>> *Subject:* Re: [AFMUG] Patch cable failure
>>
>>
>> Kind of like the 5-1/4" floppies of yesteryear. If all the tolerances
>> line up the wrong way, they technically could not work.
>>
>>
>>
>> bp
>> <part15sbs{at}gmail{dot}com>
>>
>> On 9/30/2021 1:36 PM, Adam Moffett wrote:
>>
>> Heh, "fiber demons."
>>
>> A few months back I swapped a cable between an old Cisco X2 card and a
>> patch panel and the port wouldn't link up. Cleaned and checked everything,
>> ran the OTDR, tried another cable, nothing worked.
>>
>> Then I put the old patch cable back in and it linked right up. Switched
>> back and forth, tried the new patch cable on a different interface.
>> Everything checks out except this one port won't link unless this one cable.
>>
>> I still don't know what that's all about. Maybe the port and the
>> connectors are both at the same extreme end of dimensional tolerances.
>>
>> ....or maybe it's those "fiber demons" you mention.
>>
>> -Adam
>>
>>
>>
>>
>> On 9/30/2021 4:08 PM, Nate Burke wrote:
>>
>> Put the patch cable on the VFL, nothing showed up. Light came out the
>> other end, no spots along the cable unless I bent it tight. I'll just mark
>> it up to the fiber demons.
>>
>> On 9/28/2021 7:47 AM, Josh Luthman wrote:
>>
>> 100% chance the VFL finds something. Light is light - be it a red
>> blinker or SFP blink.
>>
>> Josh Luthman
>> 24/7 Help Desk: 937-552-2340
>> Direct: 937-552-2343
>> 1100 Wayne St
>> Suite 1337
>> Troy, OH 45373
>>
>>
>> On Thu, Sep 23, 2021 at 10:10 AM Nate Burke <[email protected]> wrote:
>>
>>> Maybe I should go pull it out of the garbage and put the VFL on it to
>>> see if there's anything
>>>
>>> On 9/23/2021 9:05 AM, Chuck McCown via AF wrote:
>>> > We had one do that in a splice case a few weeks back. Just decided to
>>> break all by itself. Maybe temperature or vibrations did it. Very visible
>>> fault with the VFL.
>>> >
>>> > Sent from my iPhone
>>> >
>>> >> On Sep 23, 2021, at 7:56 AM, Nate Burke <[email protected]> wrote:
>>> >>
>>> >> If I didn't diagnose it, I wouldn't have believed it. 1M SM fiber
>>> Patch cable installed in a rack between router and a switch. Link went
>>> down at exactly noon. Router had no link, switch showed link. Replaced
>>> both SFP's with no change. Reversed patch cable and link came up. Put
>>> back to original, no link. Threw that cable in the garbage and put in a
>>> new one. I have a camera looking at the front of this rack. Nothing moved
>>> when the link went down, I can see the link light turn off on the router
>>> when it failed.
>>> >>
>>> >> I never would have believed a fiber patch cable would just up and
>>> fail with no external force.
>>> >>
>>> >> --
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>>> >> [email protected]
>>> >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
>>>
>>>
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>>>
>>
>>
>>
>>
>>
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